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. 2009 Apr 20;185(2):291–303. doi: 10.1083/jcb.200811105

Figure 7.

Figure 7.

The PIDDosome is not required for the formation of high molecular weight complexes containing caspase-2. (A) Lysates from wild-type (wt), raidd−/−, and pidd−/− SV40-immortalized MEFs were incubated at 4°C or 37°C for 1 h and subjected to size-exclusion chromatography, and fractions were precipitated, separated by SDS-PAGE, and immunoblotted with an anti–caspase-2 antibody (Ab). (B) Fractions 3–5, containing complexes ≥600 kD, and fractions 17–19, containing proteins of a molecular weight range of ∼75–40 kD, of all indicated genotypes were analyzed for the relative caspase-2 expression level. Ponceau staining of the membranes was used to compare protein loading (bottom).